snd_seq_query_subs  673 include/sound/asequencer.h #define SNDRV_SEQ_IOCTL_QUERY_SUBS	_IOWR('S', 0x4f, struct snd_seq_query_subs)
snd_seq_query_subs 2007 sound/core/seq/seq_clientmgr.c 	struct snd_seq_query_subs subs;